Nouns

(n)spastica person suffering from spastic paralysis

Adjectives

(a)spasticrelating to or characterized by spasm“a spastic colon”, “spastic paralysis is a spastic form of cerebral palsy”
(s)spasticsuffering from spastic paralysis“a spastic child”
(s)convulsive, spasmodic, spasticaffected by involuntary jerky muscular contractions; resembling a spasm“convulsive motions”, “his body made a spasmodic jerk”, “spastic movements”